1300 cubic foot living room in my apartment. I want a 3.1 set up now but eventually want a 7.2 or higher set up a few years down the road. Should I hold off on spending the money and put that away for future purchase? I am eyeing sierra -1 book shelf speaker with same for center channel along with a rythmik f15 due to it being on sale for a few dollars more than f12. Thought about powering it with an integra 30.3. Thoughts and advice is more than welcome. Thank you go your time.